Hardison is listed at 6 foot 5 inches tall, 290 pounds and has three years to play two. Rivals.com rated him as the No. 14 overall junior college prospect and third best junior college defensive end in the country.

"Marcus is one of the top defensive ends in America,” Graham said. “He’s a guy that our fans are going to love in a hurry. The thing that attracted him was that we are one of the best in the country at getting after the quarterback. We think he’ll have immediate impact here."

Cox is listed at 6 foot 3 inches tall, 230 pounds and attended Blue Ridge High in Lakeside. Rivalsrated him as the third-best recruit in Arizona and the No. 13 outside linebacker in the country.

“(ASU’s coaches) are really instilling discipline and character in the program, and that is something that means a whole lot to me,” Cox said in a press release. “I really love the coaching staff as well, and they always impress me when I visit with them. I’m proud to be an in-state guy committing to ASU, and I’m happy that I get to play close to my family and friends and have a great fan base that will always be behind me.”

Westerman transferred from Auburn and enrolled in January. He will participate in spring drills.

He was one of the most sought after recruits in Arizona history and was ranked the top recruit in the state in 2011. He’s one of the most highly rated recruits ever to join ASU as he played in two games last year for Auburn.

“Christian is going to be a tremendous player for us, very physical, very dominating,” Graham said. “He says very few words and works tremendously.”

The class includes student athletes from nine different home states. It breaks down to 16 defensive players, 10 offensive players and one specialist, but there isn’t a quarterback.

It’s the second consecutive class Graham hasn’t signed a quarterback.

Joshua Dobbs from Alpharetta, Ga., was a last-second switch from ASU to Tennessee on signing day, after he committed to ASU throughout the season.

“Obviously that wasn’t the plan,” Graham said. “I wish everyone the very best. You don’t win every battle, and can’t get every kid. All we can do is do things the right way, and that’s what we did. We are sitting great at quarterback. We have a tremendous young man in Taylor Kelly and we have (redshirt freshman) Mike Eubank and (redshirt sophomore) Mike Bercovici. But with all three of those guys, we are fine. It will be something that we will look at to bring someone in here.”